Lots of stuff

src/util/mod.rs

@@ -0,0 +1,68 @@
+use rand::{Rng,Rand};
+
+mod int128;
+mod spotify_id;
+mod arcvec;
+
+pub use util::int128::u128;
+pub use util::spotify_id::{SpotifyId, FileId};
+pub use util::arcvec::ArcVec;
+
+#[macro_export]
+macro_rules! eprintln(
+    ($($arg:tt)*) => (
+        {
+            use std::io::Write;
+            writeln!(&mut ::std::io::stderr(), $($arg)* ).unwrap()
+        }
+    )
+);
+#[macro_export]
+macro_rules! eprint(
+    ($($arg:tt)*) => (
+        {
+            use std::io::Write;
+            write!(&mut ::std::io::stderr(), $($arg)* ).unwrap()
+        }
+    )
+);
+
+pub fn rand_vec<G: Rng, R: Rand>(rng: &mut G, size: usize) -> Vec<R> {
+    let mut vec = Vec::with_capacity(size);
+
+    for _ in 0..size {
+        vec.push(R::rand(rng));
+    }
+
+    return vec
+}
+
+pub fn alloc_buffer(size: usize) -> Vec<u8> {
+    let mut vec = Vec::with_capacity(size);
+    unsafe {
+        vec.set_len(size);
+    }
+
+    vec
+}
+
+pub mod version {
+    include!(concat!(env!("OUT_DIR"), "/version.rs"));
+
+    pub fn version_string() -> String {
+        format!("librespot-{}", short_sha())
+    }
+}
+
+pub enum Either<S,T> {
+    Left(S),
+    Right(T)
+}
+
+pub fn hexdump(data: &[u8]) {
+    for b in data.iter() {
+        eprint!("{:02X} ", b);
+    }
+    eprintln!("");
+}
+